Mild
Average highs are around 21°C, so days are mild rather than hot.
December verdict
Whanganui, New Zealand in December
Weather score45Mixed
Mixed for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 7h per day, enough for a balanced month. Rainfall averages 92mm, so some wet days are possible.
December weather
Monthly averages
Temp
21°C
Rain
92mm
Sun
7h
Sea
17°C
Weather score
45
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 92mm, so some wet days are possible.
Some sun
Sunshine averages 7h per day, enough for a balanced month.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Weather map
Compare Whanganui, New Zealand with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December21°C average high
December sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
Rain
December92mm average rain
December is wetter than Whanganui's yearly average, so flexible plans matter more.
Driest monthsJanuary to May and August to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December7 hours average sun
December is brighter than Whanganui's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJanuary to February and November to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December17°C average sea
December is close to Whanganui's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJanuary to April
Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.
Weather score
December45 weather score
December scores above Whanganui's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJanuary to March
These months have the strongest weather score in the monthly averages.